Music Licensing: It's complicated. Let's face it. But today all of that is beside the point: we are happy to announce that Warner Music Group (WMG)'s artists are returning to YouTube. Under this new, multi-year global agreement, you will be able to discover, watch and share Warner music on the site. The partnership covers the full Warner catalogue and includes user-generated content containing WMG acts.

With Warner on board, we now have artists from all four of the major music labels and publishers together with hundreds of indie labels and publishers on our platform. Warner will also be able to sell their own ad inventory and will use our Content ID technology to claim and monetise user-generated videos uploaded to YouTube by Warner Music fans. The partnership is based on a revenue share generated from the ads on the videos, and this makes good business sense for everyone involved: artists and labels can make money from their videos and the YouTube community gets to enjoy them.

But enough talk... let's get back to the rock. Warner's videos will begin appearing on YouTube in the near future.

Ten Weeks. Four YouTube Users. One mission: to top the UK music charts. This week Music Tuesday spotlights the efforts of CharlieIsSoCoolLike, Jimmy0010, Nerimon and JohnnyDurham19 to do what thousands of artists have devoted their lives to and dared to dream could come true… only to see their hopes cruelly dashed.

So what do you think? Do you think they can pull it off? Are they going about harnessing the talent that abounds on ‘The Internet’ the right way? Does Mike Stock of Stock, Aitken and Waterman still have a handle on what makes a hit single?

The beauty of Chartjackers is that in just a few weeks we will have all the answers. We here at YouTube UK are watching the team’s efforts with increasing interest and wish them well -- not least because all their efforts are in aid of Children In Need. So tune into their efforts at both the Chartjackers channel and via BBC Switch.

We'd like to introduce you to the Creator's Corner, a new hub for aspiring video-makers. This section of the site brings together all the information a budding artiste could want to know about making videos, including:

discount offers on products you're most likely to covet as a video-maker (right now Apple is offering free shipping on all orders over $50)

cool graphics to place on your blog or site, to direct people back to your YouTube channel or video

We think of this as just the beginning: we're currently working on setting up some Webinars to help you take your video-making to the next level, and we're seeking out some of the most accomplished video producers on YouTube to grill them on the techniques, inspiration and secrets behind their videos. (First up: read about tilt-shifting and timelapse in Keith Loutit's "Metal Heart" video.)

In addition, we're eager to expand our badge gallery, so if you have an awesome graphic you'd like to share with others to help them advertise their YouTube presence on their own site, email it to ytcreators@gmail.com and we'll consider it for inclusion on the page. If we do add your graphic to the Corner, we'll be sure to credit you there and send you a T-shirt as thanks.

In December, world leaders will meet in Copenhagen to discuss a global agreement on climate change as part of the United Nations’ Climate Change Convention (often referred to as COP15). The goal of the meeting is to reduce global warming emissions and ultimately chart a course that avoids the most severe impacts of climate change.

The road to Copenhagen begins now, as heads of state flock to the United Nations in hopes of laying the groundwork for COP15. That's why today, with the Danish government, we're launching the YouTube COP15 channel, where you can you can raise your thoughts and questions on climate change through an initiative called "Raise Your Voice."

We know that you've never been afraid to make your opinions heard on this important issue, from uploading footage of road trips to halt climate change in India to creating humorous educational videos about global warming:

Now here's your chance to submit your most pressing questions about climate change to world leaders through YouTube. All approved entries will be broadcast on screens around COP15 in December and rated by viewers of the channel. The top-rated entries will be put in front of a panel of experts at an interactive debate that will be globally aired by YouTube/CNN International. Two winners will also receive a trip to Copenhagen to be present at the debate.

This week Music Tuesday UK focuses on the exciting depth of beatboxing talent in the UK. Some of the finest exponents of the hip-hop discipline have chosen to set up channels on YouTube, and given that they have made the effort, it’s only right to draw attention to what they’re doing.

Hopefully this has inspired you to hunt down some of the other talented beatboxers out there on YouTube, and there is no better place to start than the C4mc4st channel, which is the home of the Beatbox Battle World Championship. There you’ll find extended performances from the likes of France’s Eklips, female beatboxers Steff La Chef and Bellatrix, and Aussie phenomenon Joel Turner.

If so, keep reading. In conjunction with online film fanatics MOFILM, YouTube is offering film-makers the slightly mind-boggling prospect of seeing their work screen immediately prior to the World Premiere of the latest Clive Owen film, “The Boys Are Back”, on October 21. To add a dash of luxury to proceedings, the winners will also be invited to attend the star-heavy event as part of an all-expenses-paid trip to the capital. Oh, and they’ll pocket $10,000 cash…

Amazingly, it doesn’t end there. The MOFILM initiative actually consists of 13 separate competitions initiated by Visa, Hewlett Packard, Pepsi, Best Buy, Campbell’s, McDonald’s, Vaseline, AON, Yoplait, Haagen-Dazs, Nokia, OMO and AT&T. Winners of the Pepsi pitch, for example, will receive $20,000 to shoot a digital commercial, alongside a $10,000 commission. Campbell’s will send their favourite entrant to the Sundance Film Festival. OMO will be sending someone around the world on a fact-finding mission. The 13 winners of these contests will then be set against each other to secure ultimate MOFILM victory – and the slot at the 53rd London Film Festival.

A selection of the winners will also be Spotlighted on the YouTube UK Homepage. To find out more about the MOFILM competition – and cast your eyes over some previous winners -- head to the MOFILM channel or check out www.mofilm.com. The potential rewards are significant… competition is expected to be fierce. But you'll need to get your skates on: submissions must be in by noon on October 5.

This year’s Champions League group stages are now underway, with 32 teams vying to fight through to the final at Real Madrid’s Bernabeu stadium on Saturday, May 22. Several of the teams involved have official channels on YouTube where you can follow their progress in both the Champions League and their local competitions, so whether it’s new signings or post-match interviews you’re looking for, these channels may have what you’re looking for.

Welcome to Music Tuesday. For a few months now, the US homepage has been featuring updates from the world of YouTube music on Tuesdays, and we here in the UK are happy to finally be in a position to follow suit. Today we look at Ladies Who Vlog: female musicians who are using YouTube to connect with their audiences in new, interesting and occasionally bizarre ways.

Firstly, why make the distinction between male and female musicians? Mainly because we can feature more artists this way, but also because 2009 seems to have brought with it a real increase in high-profile acts fronted by women. In addition to this, the four acts we feature today have all produced a series of vlogs over a particularly creative time in their careers:

Little Boots’ YouTube channel has been up and running since long before she became the name on every hip critic’s lips. If you need further proof, see her first interaction with the Tenori-On here (complete with dark hair). Imogen Heap is another longtime vlogger, with a series of 40 videos covering the genesis of her new album, “Ellipse”. Candid, collaborative and occasionally crazy, these offer a real insight into the ups and downs of a process that in her case has taken two years to reach fruition.

Paloma Faith and Nerina Pallot have taken a slightly different approach to their channels. Paloma Faith is documenting the process of getting out there and promoting a record – what it’s really like to stay in a Swedish boutique hotel and hit the streets of Stockholm with little more than a pink fox for company – and Nerina Pallot is putting out a series of alternative takes on tracks from her new album via her channel – including an interesting coming together of drumsticks and a plastic storage box.

Don’t just take our word for it, head for the homepage and enjoy Music Tuesday. And if you have any suggestions for where we should be turning the Homepage Spotlight’s beam next week, leave a comment below.

Unless you’re a Vegas nut or an After Effects devotee, adding special effects to your videos can seem like an impossible task. Which is why you may find it worthwhile heading over to the Powerful Stuff channel for a look at a new tool uploaded by Virgin Media.

While it’s worth saying from the outset that you won’t be able to record the results, Powerful Stuff enables you to insert special effects into your videos – or any of the videos on the channel itself – that range from snow to explosions. You can also add sound effects that run the gamut from evil laughter to applause. In fact, you can even add a “Genre Filter” to your work, which will lend it the look of anything from the moody tones of Film Noir to the Technicolor glow of 1970s Cinema.

So, if you find yourself with a spare minute, mosey over to Powerful Stuff, have a play around with the tools and share the results with your friends.

YouTube has always been a place for you to share and enjoy videos with family and friends. Soon, we'll be making it even easier for you to find people you know on the site. We'll start by launching a "You may know these people" suggestions box on the homepage over the next few weeks that shows you the YouTube channels of people who might be your acquaintances, and lets you easily connect and subscribe to them.

How will we make the suggestions? If you've logged in to YouTube and sent a video to a friend's email address, or if you have your YouTube account linked to a Gmail account, we will use this information to help identify your friends who already have YouTube channels. You'll only see channels whose owners have allowed themselves to be found by others who have their email address.

Want to see if you've previously allowed your channel to be found by others who have your email address, or want to change your settings? Just log in and visit the "Privacy" section of My Account. Look for the checkbox at the top that says "Let others find my channel on YouTube if they have my email address."

She’s the bookies’ favourite to scoop the Mercury Music Prize for “Lungs”, is a key member of the new wave of female talent sweeping the UK’s music scene and now Florence Welch, of Florence And The Machine, has control of the YouTube homepage in her role as the final guest editor in our series of takeovers to mark the return of premium music videos.

Getting things rolling with Beyonce’s unforgettable “Single Ladies”, Florence explains: “I think there have been a lot of interpretations of this dance. I’ve done one that my friend then posted on YouTube… but nothing compares to the original.”

Next up is Spiritualized’s “You Lie, You Cheat”. The coming together of Jason Pierce, Jake Chapman and a film budget was always going to make for essential viewing, and as it is you will never see a better documentary of the interior, exterior and surrounding pavement of a tower block.

“Liars are one of my favourite live bands,” says Florence of her next selection, “Plaster Casts Of Everything”. “At one point I think that Karen O gets projected onto Angus, but I don’t know. I have been looking at this video loads to see if I can see, maybe you will.” If you do, drop her a line at her channel.

Wrapping up proceedings with Arcade Fire’s “Neighbourhood”, Florence leaves us with a perfectly polite: “Thank you for having me, YouTube.” With manners like that, she can come again. Enjoy her selections and join us in wishing Florence And The Machine the best of luck for tomorrow evening, when the winner of the Mercury Music Prize 2009 will be announced.

In his role as a presenter with music show Pocket TV, Matt Edmondson – formerly of CBBC and Holy Moly – has eaten Sean Paul’s meat, got in the faces of each and every one of The Saturdays and stripped down to his kecks with Booty Luv. Today he takes his YouTube adventure to the next level with a stint as Guest Editor as part of our series of takeovers to mark the return of premium music videos to the service.

He veritably springs out of the traps, summoning forth Coldplay’s latest offering, “Strawberry Swing”. While conceding that “it’s an average song” – thereby presumably scuttling any hope of getting arguably the biggest British band in the world onto his show – Mr Edmondson rightly identifies the stop-motion chalk epic as “a very, very good video”. He then makes a vague stab at backtracking, adding that: “If it is Chris Martin in the video, I applaud him because he is a very, very patient man.”

Having learned his lesson only to the extent that he then runs down someone he has already interviewed – “Daniel Merriweather: what a lovely, little, cheeky, cherub-faced man” – in sending “Red” straight to the homepage, he then turns his wrath on Armand Van Helden’s lack of input into “Bonkers”. Is there no pleasing this man?

If there is, it sounds like Lady Gaga (as seen in final pick “Paparazzi”) is the only artist who can reach him: “During the video you can see Lady Gaga dance around on crutches and in a wheelchair. It really is quite spectacular, so I do strongly recommend that you check it out.”

And with that, Matt Edmonson returns to foraging for food in the thick woods of… London’s South Bank. We here at YouTube would like to thank him for a) selecting two of the best music videos of the past year for his takeover, and b) producing as polished a Guest Editor video as we have seen for some time. Remember: if you want to see more of Matt, head to Pocket TV, where he has been doing some great work alongside Jameela Jamil.

As far as recommendations go, chart-topping Grime artist Tinchy Stryder saying that “YouTube is one of those sites that I always go on”, ranks up there with the best of them. When he then goes on to say that “if you want to find the latest thing, YouTube is the home”, we felt duty-bound to hand him the editorial reins for a day. Flattery will get you everywhere.

The result is a selection that runs from the full-length version of “Thriller” – “A groundbreaking video” -- to the dark vision of Bone, Thugs N Harmony’s “Crossroads” – “When I was younger, this video used to scare me a bit” – taking in Dipset’s guided tour of their neighbourhood, “Santana’s Town”, in the process.

Some great tunes and memorable videos, but YouTube can’t allow Tinchy to leave the building without sharing some of his work – “Never Leave You”, his second chart topper of 2009 to date – via the homepage. Over 700,000 clicks, a No. 1 single and the chance to work alongside Amelle Berrabah of The Sugarbabes -- what's not to like? Then again, who knows what future releases from “Catch 22” will bring?

Music aside, it is also possible to view some of the latest interviews with the Star In The Hood, such as this slightly kinky affair from Pocket TV and an intriguing tete-a-tete with Tim Westwood, the nearest thing that UK Hip-Hop has to an elder statesman (who, incidentally, runs a mean channel over at TimWestwoodTV).

Anyway, enough talk. Here’s hoping that you enjoy Tinchy Stryder’s selections, and we would like to extend our thanks to him for taking the time to share his picks with us.

Millions. Tens of millions. Hundreds of millions. There aren’t many people who can track their time on YouTube using these kinds of numbers, but thanks to being behind probably the most successful series of Dance Music videos ever, today’s Guest Editor can. Add to that the fact that he spends upwards of three hours a day on the site and Basshunter – aka Jonas Altberg – should be a natural when it comes to selecting videos.

Whichever way you slice it, Jonas knows what the online video audience is looking for – you don’t see too many videos with over 67,000,000 clicks, after all – which is what makes his selection of SNAP’s 1992 chart-topper “Rhythm Is A Dancer” all the more interesting. “It’s a classic… a song that I used to dance to when I was young,” he explains. Here at YouTube we could recall the clouds of dry ice in the video. The space exploration theme came as more of a blast form the past.

Not half as much of a jolt, however, as we got on viewing his second selection: Arash and Shaggy’s “Donya”, which has to rank as one of the most atmospheric videos we have seen in some time. Set against Basshunter’s next choice (and latest release) “Every Morning”, that’s saying something. “It’s based on a true story,” Jonas explains. “The ending is very dramatic… and mysterious.” Wrapping things up with “massive, well known, old school tune” from Essex’s finest, The Prodigy – the one and only “Firestarter” – it’s clear that Basshunter is a man who knows his onions.

In the light of which, if you want to learn more about the trying life of an international superstar artist, DJ and producer, tune into his “Behind The Bass” documentary, or maybe find out what happened when he got face invaded by Pocket TV.

Finally, seeing as he is generous enough to come out and say “I love YouTube… it is like the centre of the Universe for me,” we would like to return the compliment. He and Aylar are welcome to drop round for tea whenever they’re in town.

Anyway: to the music! We hope you enjoy today’s takeover – we have a few more lined up for the coming days, so stay tuned.

We work hard to make YouTube a place where existing fans and new audiences can discover their favourite content, whatever it might be. For the past few months, while discussions were ongoing with collection society PRS for Music, YouTube users in the UK have been restricted from viewing premium music videos on the site.

Today we are pleased to announce that an agreement for a licence has been reached and both PRS for Music and YouTube are happy that the negotiations resulted in a mutually acceptable deal. As a result of the new agreement, premium music videos in the UK are coming back to YouTube – this is good for songwriters and composers, music fans and YouTube.

In the coming days, premium music videos will begin to come back to YouTube in the UK and we intend to celebrate with a series of guest editorships from some of the foremost artists and magazine shows on the site. We’ll have to wait for the appropriate content to go live before we can share more, so stay tuned.